<template>
    <div>
        <div class="crumbs">
            <el-breadcrumb separator="/">
                <el-breadcrumb-item>
                    <i class="el-icon-lx-cascades"></i> 班级管理
                </el-breadcrumb-item>
            </el-breadcrumb>
        </div>
        <div class="container">
            <div class="handle-box">
                <el-button
                    type="primary"
                    icon="el-icon-delete"
                    class="handle-del mr10"
                    @click="delAllSelection"
                >批量删除</el-button>
                <el-input v-model="query.clazzName" placeholder="请输入班级名称" class="handle-input mr10"></el-input>
                <el-button type="primary" icon="el-icon-search" @click="handleSearch">搜索</el-button>
                <el-button type="primary" icon="el-icon-plus" class="mr10" @click="handleAdd">新增</el-button>
            </div>
            <el-table
                :data="tableData"
                border
                class="table"
                ref="multipleTable"
                header-cell-class-name="table-header"
                @selection-change="handleSelectionChange"
            >
                <el-table-column type="selection" width="55" align="center"></el-table-column>
                <el-table-column prop="clazzCode" label="班级Code" width="250" align="center"></el-table-column>
                <el-table-column prop="clazzName" label="班级名称" width="280"></el-table-column>
                <el-table-column prop="yearCode" label="年份" width="150"></el-table-column>
                <el-table-column prop="teacherName" label="教师姓名" width="220"></el-table-column>
                <el-table-column label="操作" align="center" >
                    <template slot-scope="scope">
                        <el-button
                            type="text"
                            icon="el-icon-edit"
                            @click="addOrUpdateHandler(scope.row)"
                        >编辑</el-button>
                        <el-button
                            type="text"
                            icon="el-icon-delete"
                            class="red"
                            @click="deleteHandler(scope.row.id)"
                        >删除</el-button>
                    </template>
                </el-table-column>
            </el-table>
            <div class="pagination">
                <el-pagination
                    background
                    layout="total, prev, pager, next"
                    :current-page="query.pageIndex"
                    :page-size="query.pageSize"
                    :total="pageTotal"
                    @current-change="handlePageChange"
                ></el-pagination>
            </div>
        </div>

        <!-- 编辑弹出框 -->
        <el-dialog :visible.sync="editVisible" width="30%">
            <el-form ref="form" :model="form" label-width="80px">
                <el-form-item label="班级Code">
                    <el-input v-model="form.clazzCode"></el-input>
                </el-form-item>
                <el-form-item label="班级名称">
                    <el-input v-model="form.clazzName"></el-input>
                </el-form-item>
                <el-form-item label="班级年份">
                    <el-select v-model="form.yearCode" placeholder="请选择">
                        <el-option
                            v-for="(item,index) in yearList"
                            v-bind:key="index"
                            :label="item.label"
                            :value="item.val">
                        </el-option>
                    </el-select>
                </el-form-item>
                <el-form-item label="班级教师">
                    <el-select v-model="form.teacherId" placeholder="请选择">
                        <el-option
                            v-for="(item,index) in teacherList"
                            v-bind:key="index"
                            :label="item.name"
                            :value="item.id">
                        </el-option>
                    </el-select>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editVisible = false">取 消</el-button>
                <el-button type="primary" @click="handleSave()">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
import { saveClazz, getClazzData, delClazz, getAllTeacher, getAllClazz } from '../../api/index';
export default {
    name: 'basetable',
    data() {
        return {
            query: {
                clazzName: '',
                pageIndex: 1,
                pageSize: 10
            },
            tableData: [],
            multipleSelection: [],
            yearList: [
                { val: "2019", label: "2019" },
                { val: "2020", label: "2020" },
                { val: "2021", label: "2021" },
                { val: "2022", label: "2022" },
                { val: "2023", label: "2023" },
                { val: "2024", label: "2024" }
            ],
            delList: [],
            teacherList: [],
            editVisible: false,
            pageTotal: 0,
            form: {},
            idx: -1,
            id: -1
        };
    },
    created() {
        this.getData();
        this.getAllClazz();
        this.getAllTeacher();
    },
    methods: {
        getAllTeacher() {
            getAllTeacher().then(res => {
                if (res.code == 0 || res.code == 200) {
                    this.teacherList = res.data;
                } else {
                    this.$message.success('添加失败');
                }
            });
        },
        getAllClazz() {
            getAllClazz().then(res => {
                if (res.code == 0 || res.code == 200) {
                    this.clazzList = res.data;
                } else {
                    this.$message.success('添加失败');
                }
            });
        },
        addOrUpdateHandler(row) {
            this.form = row
            this.editVisible = true
        },
        deleteHandler(id) {
            let param = {
                'ids': id
            }
            delClazz(param).then(res => {
                if (res.code == 0 || res.code == 200) {
                    this.$message.success('删除成功');
                    this.getData()
                } else {
                    this.$message.success('添加失败');
                }
            });
        },
        handleSave() {
            for (let i = 0; i < this.teacherList.length;i++) {
                if (this.teacherList[i]['id'] == this.form.teacherId) {
                    this.form.teacherName = this.teacherList[i]['name']
                }
            }
            saveClazz(this.form).then(res => {
                if (res.code == 0 || res.code == 200) {
                    this.$message.success('添加成功');
                    this.editVisible = false
                    this.getData()
                } else {
                    this.$message.success('添加失败');
                }
            });
        },
        handleAdd() { 
            this.form = {}
            this.editVisible = true
        },
        // 获取 easy-mock 的模拟数据
        getData() {
            getClazzData(this.query).then(res => {
                console.info(res)
                this.tableData = res.data.list;
                this.pageTotal = res.data.totalCount;
            });
        },
        // 触发搜索按钮
        handleSearch() {
            this.$set(this.query, 'pageIndex', 1);
            this.getData();
        },
        // 删除操作
        handleDelete(index, row) {
            // 二次确认删除
            this.$confirm('确定要删除吗？', '提示', {
                type: 'warning'
            })
                .then(() => {
                    this.$message.success('删除成功');
                    this.tableData.splice(index, 1);
                })
                .catch(() => {});
        },
        // 多选操作
        handleSelectionChange(val) {
            this.multipleSelection = val;
        },
        delAllSelection() {
            const length = this.multipleSelection.length;
            let str = '';
            this.delList = this.delList.concat(this.multipleSelection);
            for (let i = 0; i < length; i++) {
                str += this.multipleSelection[i].clazzCode + ',';
            }
            this.deleteHandler(str)
            this.multipleSelection = [];
        },
        // 编辑操作
        handleEdit(index, row) {
            this.idx = index;
            this.form = row;
            this.editVisible = true;
        },
        // 保存编辑
        saveEdit() {
            this.editVisible = false;
            this.$message.success(`修改第 ${this.idx + 1} 行成功`);
            this.$set(this.tableData, this.idx, this.form);
        },
        // 分页导航
        handlePageChange(val) {
            this.$set(this.query, 'pageIndex', val);
            this.getData();
        }
    }
};
</script>

<style scoped>
.handle-box {
    margin-bottom: 20px;
}

.handle-select {
    width: 120px;
}

.handle-input {
    width: 300px;
    display: inline-block;
}
.table {
    width: 100%;
    font-size: 14px;
}
.red {
    color: #ff0000;
}
.mr10 {
    margin-right: 10px;
}
.table-td-thumb {
    display: block;
    margin: auto;
    width: 40px;
    height: 40px;
}
</style>
